Incubator



Aug e f i i g TEe v v BnUcE A. Mairnnhou 'srnmGI IE LnHoIiIo inouna'fon Y I Application filed March 25} 1192c. srial ii .-:97,4,s1. f

My invention relates to incubators,

It is theobject of my inventionto secure-a an even temperature by natural circulation throughout an incubator chamber-without. 5 the resort to artificiahmeans for creating circulation,

, Referring tothe drawing, there isshown- .a section through the incubator,

' 'Referring to the drawingin detail,- it will be observed that I haveprovided .an incubator box havingthe usual insulatedside,

.top and bottom Walls which is provided with 1 llhe bottom is designated.

the usual' doors. v 1,* the side Walls 2, the rear wall 3, and the top 4:, The doors are not shown for the Q In the bottom" 'of-th'e incubator chamber 1 provide a heating element which may be 420 of any desired character, suc.h as the elec-s *"tric heating-element, 5 mounted-upon the brackets 6. Current for the heating element v is supplied through the'cable controlled. by "the rheostat 8 and thelswitch 9.

' lAbov'ethe heating element-is a perforated screen or netting'lQ, whichis supported by J cross-members 1-1 and shoulders" 12. The screen isto prevent down and other easily inflammable matter 7 falling onto the electric V ge-he'ater and catching fire;v Mounted j-up'on' some offthese cross-members and shoulders are the uprights 13' which carry thef'guide Ways 14: for the tray's'15 havingthlei wiref netting bottoms 16. Any form orjarrange ment of trays maybe-provided. LTli'fe lower most trays are'l'ocated'at ahpredetermine'd distance abovethe-netting 110" to permit of j the introduction of the. circulatingpipe in i theside wall 2 at a point belowthevjlower 401m'ost tray. These circulating pipes, of which there may be anylnumber, are pro vided fwith an inlet opening 17 near the bot tom of the compartment for introducing cooled air which has passed downwardly} through the pipe 18 which] communicates with theyexitfopening "19 at the top 'of' thr I -incubator,,preferablyover theitrays'contai'niingtheeg'gs V, v i e These 7 circulating pipes maybe arranged man desired fashion so long 'asltheypro rising heated, air, Zpassing th-rough the eggtrays aroundthe eggs tothe top ofthe cabi net Where the airmakes' its' exit through the z I g 3 A small ventilator 20 is provided in purpose of clearness, but they may be of any p desired character customary-in the art. I

Letters'Patent, is: 1.1111'1 combination, a cabinet, a heatin'g'com -.partment.in the bottom-thereof having'a'perforated top toprevent down fallingj onvthey A heater, a plurality of tra'ys supported in'the'} 5 if of the cabinet o ver the trays where it again cabinet and not connected therewith or atg tachedthereto in any way except at its point j 1 an exit atthe top forthehe'ated air, a a means ofconveying the air. downwardly toi p {the bottom of -the"compartment Where" in its corded condition it mixes with-the upwardly opening 19. p 5 p i m v It will be noted that this arrangement irii surescontinuous circulation-of the air of its ownmomentuni withzthe artificial stimula i tion or actuation. This'results inuniform' temperatures being maintained throughout the chamber. i

topof the cabinet" for the usual purposes.

ventilator 'w'illnormally} be 7' closed. Doorsf2l are provided in the bottomfof the cabinet which may be heldjop'enbythe fold"- i m 22 Wh 'it is desired to admit fresh '7 a 'Itfwill be understood that l desire tocoInprehend within myinyention various modi-j fi cations. V It'is obvious thatfthe pipes' may. I

ation will remain the same,

Having thus fully described invention, hat I claim as new and desire toisecu're cabinet above theheating.compartmenuthe I lowermost traybeing spaced a predetermined: distance above the perforated heating compartment top, a iipip'e leading from} the. nae 7 1' iwall ofthe cabinetat a point between the, per 1 foratedfto'p andthe bottomtray to the .top

communicates with the interior of the -cabi net'said piper being completely outside of the of exit and entrance therefrom. e

In combination,acahinet', aheating com- I partment in the bottom thereof'having a perforated toplto v prevent). down falling on the 7 heater, a plurality of trays supported in the cabinet above the heating compartment, the lowermost tray being spaced a predetermined distance above the perforated heating compartment top, a pipe leading from the side 7 wall of the cabinet at a point between the perforated top and the bottom tray to the top .of the cabinet over the trays; where it again communicates with the interior of the cabi- 10 net, and a second unit of trays and a second 1 pipe oppositely disposed fromtheufirst mentioned'nnit'of trays and pipe said pipes being completely outsideof the cabinet and not connected therewith or attached thereto in any Way except at its point of exit and entrance therefrom. i 3. In combination, a cabinet, a heatingcom- V partment in the bottom thereof having a perforatedtop to prevent down falling on the heater, a plurality of trays supported in the cabinet above the heating compartment, the lowermost tray being spaced a predetermined distance above the perforated heating; coinpartment top, a pipe leading from the side 05 wall of the cabinet at a aoint between the oerforated top and the bottom tray to the top of the cabinet oyerithe trays Where it again coinmunicates with the interior the cabinet, a second unit of trays anda second pipe oppo- 'sitely disposed from the first mentioned unit of trays and pipe, and means in said cabinet for regulating the entrance thereto oi' fresh air and the exit therefrom of foul air said pip es being completely outside of the cabinet anu not connected therewith or attached thereto in any way exceptat, its point of exit and entrance therefrom, In testimony whereofl-l affixmy signa- 'ture.

BRUCEAYQMAYERI 

